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US Patent: 4,965,494
Capacitor Charging Circuit for Timing Light Power Source
Patentees:
Leonard J. Wisneski, Jr. (exact or similar names) - Kenosha, WI
Gordon Lindhard (exact or similar names) - Racine, WI

USPTO Classifications:
315/209CD, 315/241S

Tool Categories:

Assignees:
Snap-On Tools Corp. - Kenosha, WI

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Oct. 23, 1985
Granted: Oct. 23, 1990

Patent Pictures:
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Snap-On Tools Company History
Description:
Emrich & Dithmar - patent attorneys

Abstract

A strobe light power source includes a capacitor which is alternately charged through an inverter transformer and a rectifier and discharged through a strobe lamp. A MOSFET switch is connected in series with the transformer primary and has applied to its gate electrode a rectangular wave output signal from an oscillator. The oscillator and the transformer primary are coupled to a power supply independently of each other. A breakdown diode is connected in parallel with the MOSFET to limit the voltage thereacross.

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